[master] Replace "Nylas N1" by "Nylas Mail" in build scripts
[master] Replace "Nylas N1" by "Nylas Mail" in build scripts

Summary: As discussed --- we need to make those changes to make the autoupdater work across versions.

Test Plan: Will run a build.

Reviewers: evan

Reviewed By: evan

Differential Revision: https://phab.nylas.com/D3701

nylas/nylas-mail,simonft/nylas-mail,nylas-mail-lives/nylas-mail,nylas-mail-lives/nylas-mail,nirmit/nylas-mail,simonft/nylas-mail,nylas-mail-lives/nylas-mail,nylas-mail-lives/nylas-mail,nylas/nylas-mail,nirmit/nylas-mail,nylas-mail-lives/nylas-mail,simonft/nylas-mail,nylas/nylas-mail,nylas/nylas-mail,nirmit/nylas-mail,nirmit/nylas-mail,simonft/nylas-mail,nylas/nylas-mail,simonft/nylas-mail,nirmit/nylas-mail